add: macro endpoints

add: basic macro support
fix: database locking with lock-pointer
fix: memory leaks

src/models/junction_relay_schedule.c

@@ -62,16 +62,18 @@ junction_relay_schedule_insert_weekdays(int relay_id, int *schedule_ids)
         sqlite3_bind_int(stmt, i * 3 + 3, relay_id);
     }
 
+    free(query);
+
     rc = sqlite3_step(stmt);
     if (rc != SQLITE_DONE)
     {
         LOGGER_ERR("error inserting data: %s", sqlite3_errmsg(global_database));
-        return false;
+        return 1;
     }
 
     sqlite3_finalize(stmt);
 
-    return true;
+    return 0;
 }
 
 int